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HP C/HP-UX Programmer's Guide: HP 9000 Computers > Chapter 4 Optimizing HP C Programs Enabling Basic Optimization |
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To enable basic optimizations, use the -O option (equivalent to +O2), as follows:
Basic optimizations do not change the behavior of ANSI C standard-conforming code. They improve run-time execution time but only increase compile time and link time by a moderate amount. |
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